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-   -   Found a factor? Post it here. Or forever fold your crease. (https://www.mersenneforum.org/showthread.php?t=13977)

sweety439 2022-06-20 04:39

[QUOTE=linament;608140]I didn't think I was ever going to get a P-1 factor that I thought was worthy of posting here; but, today (PDT), I found [M]8879293[/M] has a composite factor, 1952505446389508559973390809501412786062062585404808923663962210457688947228452593 (270.042 bits):
[URL="https://www.mersenne.ca/factor/509948624278384111727110637486537527543"]50994862427838411172711063748653752754[/URL] (128.584 bits) and [URL="https://www.mersenne.ca/factor/3828827755251720703479206898096918957995351"]3828827755251720703479206898096918957995351[/URL] (141.458 bits)
Also found today, but slightly less impressive, I found [M]8859827[/M] has a composite factor, 3564553875788467188403061203234448263673576104207 (164.608 bits):
[URL="https://www.mersenne.ca/factor/39185475778814976961751"]39185475778814976961751[/URL] (75.053 bits) and [URL="https://www.mersenne.ca/factor/909662012504027897396320321"]909662012504027897396320321[/URL] (89.565 bits)
My first ever double composite in a single day.[/QUOTE]

Your factors are completely wrong.

50994862427838411172711063748653752754[B]3[/B] instead of 50994862427838411172711063748653752754

3564553875788467188403061203234448263673576104207[B]1[/B] instead of 3564553875788467188403061203234448263673576104207

masser 2022-06-20 05:05

[QUOTE=linament;608140]I didn't think I was ever going to get a P-1 factor that I thought was worthy of posting here; but, today (PDT), I found [M]8879293[/M] has a composite factor, 1952505446389508559973390809501412786062062585404808923663962210457688947228452593 (270.042 bits):
[URL="https://www.mersenne.ca/factor/509948624278384111727110637486537527543"]50994862427838411172711063748653752754[/URL] (128.584 bits) and [URL="https://www.mersenne.ca/factor/3828827755251720703479206898096918957995351"]3828827755251720703479206898096918957995351[/URL] (141.458 bits)
Also found today, but slightly less impressive, I found [M]8859827[/M] has a composite factor, 3564553875788467188403061203234448263673576104207 (164.608 bits):
[URL="https://www.mersenne.ca/factor/39185475778814976961751"]39185475778814976961751[/URL] (75.053 bits) and [URL="https://www.mersenne.ca/factor/909662012504027897396320321"]909662012504027897396320321[/URL] (89.565 bits)
My first ever double composite in a single day.[/QUOTE]
:showoff::tu: - the larger factor is 43rd on the all time p-1 Mersenne factor list!

tha 2022-06-20 15:16

Find of the day: [URL="https://www.mersenne.ca/exponent/9491897"]9491897[/URL]

145.7 bits, personal record.

James Heinrich 2022-06-20 15:54

[QUOTE=tha;608161]Find of the day: [URL="https://www.mersenne.ca/exponent/9491897"]9491897[/URL] 145.7 bits, personal record.[/QUOTE]Impressive! :cool:

tha 2022-06-20 22:31

[QUOTE=tha;608161]Find of the day: [URL="https://www.mersenne.ca/exponent/9491897"]9491897[/URL]

145.7 bits, personal record.[/QUOTE]

And a 127.6 bits find within 24 hours thereafter: [URL="https://www.mersenne.ca/exponent/9493151"]9493151[/URL]

masser 2022-06-21 23:55

1 Attachment(s)
An absolute unit:

James Heinrich 2022-06-22 00:20

[QUOTE=masser;608242]An absolute unit:[/QUOTE][M]M27506879[/M] has a 230.239-bit (70-digit) [b]composite[/b] (P22+P23+P26) factor: [url=https://www.mersenne.ca/M27506879]2036174125816121071359980479118739320526578640539327308453173168258209[/url] (P-1,B1=285000,B2=34496700)
Exponent had 3 previously-known factors, now it has 3 more for a total of 6. :smile:

Jwb52z 2022-07-01 21:49

P-1 found a factor in stage #2, B1=495000, B2=14113000.
UID: Jwb52z/Clay, M115819853 has a factor: 389465490663842528068121 (P-1, B1=495000, B2=14113000)

78.366 bits.

Jwb52z 2022-07-02 05:55

P-1 found a factor in stage #2, B1=490000, B2=13984000.
UID: Jwb52z/Clay, M114758353 has a factor: 3328576113941665489451567 (P-1, B1=490000, B2=13984000)

81.461 bits.

Jwb52z 2022-07-14 23:39

P-1 found a factor in stage #1, B1=495000.
UID: Jwb52z/Clay, M115896083 has a factor: 57722400286012225410987976001 (P-1, B1=495000)

95.543 bits.

Jwb52z 2022-07-19 23:44

P-1 found a factor in stage #1, B1=495000.
UID: Jwb52z/Clay, M115932499 has a factor: 31496057732563307067135799 (P-1, B1=495000)\

84.703 bits.


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